A simplified simulation method for the calculation of conducted electromagnetic interference (EMI) caused by switched power converters (SPCs) is presented. The method presented here is based on a “sourcepropagation-pathderived disturbance” simulation process and is specially designed to simplify the mentioned computation problems. In the design of the proposed method, quick and robust simulatio...

Authors have introduced a quasidi erential signaling system, which is the method to realize low EMI (electromagnetic interference) transmission by matching the degree of imbalance of a line, a driver and a load. In this paper, authors present the measurement result of a common-mode current flowing on a transmission line, which has a narrow return trace. As a result, we confirm the e ectiveness ...

In this paper, a novel CMOS Operational Amplifier input stage which is robust to high power electromagnetic interference (EMI) without any significant penalty in baseband performance is presented and its operation principle is discussed. An opamp which includes the new input stage is proposed and it is compared in terms of immunity to EMI with a standard opamp circuit on the basis of computer s...

Wireless telephones are becoming increasingly common and will be more so in the future. Unfortunately, many are unusable with hearing aids and may actively interfere with the normal use of hearing aids because of the electromagnetic interference (EMI) generated by wireless telephones. The EMI generated by digital wireless telephones is much greater than that of analog wireless telephones. More ...

The authors conducted the extensive ship-based sea ice observations from December 2000 to February 2001 in Lützow-Holm Bay, Antarctica. The authors focused on the observations of sea ice thickness in the land fast ice, which provides fundamental information on the unique growth and decay process of the sea ice in this area. The thickness of ice plus snow was measured using a portable Electro-Ma...

The aim of this paper is to study the effect of EMI in Switched mode PWM Inverter fed AC drive. This Switched mode PWM Inverter has an inherent noise source. This noise is mitigated by a New Active Common Mode Electro Magnetic Interference Filter (ACEF) which is proposed for switched mode power supply applications. The proposed filter is based on current sensing and a compensation circuit which...

An all-digital spread-spectrum clock generator (ADSSCG) with direct modulation on the digitally controlled oscillator (DCO) is presented. The proposed ADSSCG can generate an accurate triangular modulation on the output frequency, and thus it can achieve high electromagnetic interference (EMI) reduction with a smaller spreading ratio as compared with existing designs. In addition, the proposed f...

This paper presents a comparative study of susceptibility reduction techniques for electromagnetic interference (EMI) in digital integrated circuits (ICs). Both direct power injection (DPI) and very-fast transmission-line pulsing (VF-TLP) methods are used to inject interference into the substrate of a single test chip. This IC is built around six functionally identical cores, differing only by ...

This work analyses the conducted EMI generated by an inverter-fed induction motor drive system with the pulse with modulation (PWM) as one of the most difficult current technical problem which limits power electronics drive's evolution. The analysis of the impedance characteristics of the converters load (motor and cable) is fundamental to interpret the common and differential mode of emission ...

This article describes a UHF receiving system used to easily locate a very wide variety of sources of electromagnetic interference (EMI). The system consists of a sensitive narrow-bandwidth 318 MHz receiver, a directional handheld Yagi antenna and a headset (see Figs 1-3). Some of the typical broadband emitters of radio frequency interference (RFI) that you can pinpoint are powerline insulators...